mirror of
https://github.com/h3pdesign/Neon-Vision-Editor
synced 2026-04-21 21:37:17 +00:00
0945b23b01
iOS - Keep compact, phone-appropriate toolbar behavior - Improve toolbar/menu responsiveness and action access consistency - Include mobile editor parity fixes (syntax highlighting and line-number visibility) iPadOS - Make toolbar width adaptive to device/screen size - Keep toolbar height compact (matching iPhone-style vertical density) - Distribute toolbar controls across available width - Promote key overflow actions to visible toolbar buttons when space allows (open/save, sidebar toggles, find/replace, wrap, completion), with overflow fallback - Use active UIWindowScene screen bounds for width calculation (deprecation-safe) macOS - Keep full toolbar + menubar action coverage aligned - Preserve desktop toolbar behavior while iOS/iPadOS layouts diverge - Retain platform-specific toolbar/menu polish without regressions
777 lines
34 KiB
Swift
777 lines
34 KiB
Swift
import SwiftUI
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import Foundation
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#if os(macOS)
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import AppKit
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final class AcceptingTextView: NSTextView {
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override var acceptsFirstResponder: Bool { true }
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override var mouseDownCanMoveWindow: Bool { false }
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override var isOpaque: Bool { false }
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// We want the caret at the *start* of the paste.
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private var pendingPasteCaretLocation: Int?
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// MARK: - Drag & Drop: insert file contents instead of file path
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override func draggingEntered(_ sender: NSDraggingInfo) -> NSDragOperation {
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let canRead = sender.draggingPasteboard.canReadObject(forClasses: [NSURL.self], options: [
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.urlReadingFileURLsOnly: true
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])
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return canRead ? .copy : []
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}
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override func performDragOperation(_ sender: NSDraggingInfo) -> Bool {
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let pb = sender.draggingPasteboard
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if let nsurls = pb.readObjects(forClasses: [NSURL.self], options: [.urlReadingFileURLsOnly: true]) as? [NSURL],
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let first = nsurls.first {
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let url: URL = first as URL
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let didAccess = url.startAccessingSecurityScopedResource()
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defer { if didAccess { url.stopAccessingSecurityScopedResource() } }
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do {
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// Read file contents with security-scoped access
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let content: String
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if let data = try? Data(contentsOf: url) {
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if let s = String(data: data, encoding: .utf8) {
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content = s
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} else if let s = String(data: data, encoding: .utf16) {
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content = s
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} else {
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content = try String(contentsOf: url, encoding: .utf8)
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}
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} else {
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content = try String(contentsOf: url, encoding: .utf8)
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}
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// Replace current selection with the dropped file contents
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let nsContent = content as NSString
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let sel = selectedRange()
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undoManager?.disableUndoRegistration()
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textStorage?.beginEditing()
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textStorage?.mutableString.replaceCharacters(in: sel, with: nsContent as String)
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textStorage?.endEditing()
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undoManager?.enableUndoRegistration()
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// Notify the text system so delegates/SwiftUI binding update
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self.didChangeText()
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// Move caret to the end of inserted content and reveal range
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let newLoc = sel.location + nsContent.length
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setSelectedRange(NSRange(location: newLoc, length: 0))
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// Ensure the full inserted range is visible
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let insertedRange = NSRange(location: sel.location, length: nsContent.length)
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scrollRangeToVisible(insertedRange)
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NotificationCenter.default.post(name: .pastedText, object: content)
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return true
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} catch {
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return false
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}
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}
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return false
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}
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// MARK: - Typing helpers (your existing behavior)
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override func insertText(_ insertString: Any, replacementRange: NSRange) {
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guard let s = insertString as? String else {
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super.insertText(insertString, replacementRange: replacementRange)
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return
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}
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// Auto-indent by copying leading whitespace
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if s == "\n" {
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// Auto-indent: copy leading whitespace from current line
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let ns = (string as NSString)
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let sel = selectedRange()
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let lineRange = ns.lineRange(for: NSRange(location: sel.location, length: 0))
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let currentLine = ns.substring(with: NSRange(
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location: lineRange.location,
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length: max(0, sel.location - lineRange.location)
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))
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let indent = currentLine.prefix { $0 == " " || $0 == "\t" }
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super.insertText("\n" + indent, replacementRange: replacementRange)
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return
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}
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// Auto-close common bracket/quote pairs
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let pairs: [String: String] = ["(": ")", "[": "]", "{": "}", "\"": "\"", "'": "'"]
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if let closing = pairs[s] {
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let sel = selectedRange()
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super.insertText(s + closing, replacementRange: replacementRange)
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setSelectedRange(NSRange(location: sel.location + 1, length: 0))
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return
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}
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super.insertText(insertString, replacementRange: replacementRange)
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}
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// Paste: capture insertion point and enforce caret position after paste across async updates.
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override func paste(_ sender: Any?) {
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// Capture where paste begins (start of insertion/replacement)
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pendingPasteCaretLocation = selectedRange().location
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// Keep your existing notification behavior
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let pastedString = NSPasteboard.general.string(forType: .string)
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super.paste(sender)
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if let pastedString, !pastedString.isEmpty {
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NotificationCenter.default.post(name: .pastedText, object: pastedString)
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}
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// Enforce caret after paste (multiple ticks beats late selection changes)
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schedulePasteCaretEnforcement()
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}
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override func didChangeText() {
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super.didChangeText()
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// Pasting triggers didChangeText; schedule enforcement again.
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schedulePasteCaretEnforcement()
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}
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// Re-apply the desired caret position over multiple runloop ticks to beat late layout/async work.
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private func schedulePasteCaretEnforcement() {
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guard pendingPasteCaretLocation != nil else { return }
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// Cancel previously queued enforcement to avoid spamming
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NSObject.cancelPreviousPerformRequests(withTarget: self, selector: #selector(applyPendingPasteCaret), object: nil)
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// Run next turn
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perform(#selector(applyPendingPasteCaret), with: nil, afterDelay: 0)
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// Run again next runloop tick (beats "snap back" from late async work)
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DispatchQueue.main.async { [weak self] in
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self?.applyPendingPasteCaret()
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}
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// Run once more with a tiny delay (beats slower async highlight passes)
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DispatchQueue.main.asyncAfter(deadline: .now() + 0.02) { [weak self] in
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self?.applyPendingPasteCaret()
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}
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}
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@objc private func applyPendingPasteCaret() {
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guard let desired = pendingPasteCaretLocation else { return }
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let length = (string as NSString).length
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let loc = min(max(0, desired), length)
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let range = NSRange(location: loc, length: 0)
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// Set caret and keep it visible
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setSelectedRange(range)
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if let container = textContainer {
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layoutManager?.ensureLayout(for: container)
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}
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scrollRangeToVisible(range)
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// Important: clear only after we've enforced at least once.
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// The delayed calls will no-op once this is nil.
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pendingPasteCaretLocation = nil
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}
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}
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// NSViewRepresentable wrapper around NSTextView to integrate with SwiftUI.
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struct CustomTextEditor: NSViewRepresentable {
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@Binding var text: String
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let language: String
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let colorScheme: ColorScheme
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let fontSize: CGFloat
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@Binding var isLineWrapEnabled: Bool
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let translucentBackgroundEnabled: Bool
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// Toggle soft-wrapping by adjusting text container sizing and scroller visibility.
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private func applyWrapMode(isWrapped: Bool, textView: NSTextView, scrollView: NSScrollView) {
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if isWrapped {
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// Wrap: track the text view width, no horizontal scrolling
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textView.isHorizontallyResizable = false
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textView.textContainer?.widthTracksTextView = true
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textView.textContainer?.heightTracksTextView = false
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scrollView.hasHorizontalScroller = false
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// Ensure the container width matches the visible content width right now
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let contentWidth = scrollView.contentSize.width
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let width = contentWidth > 0 ? contentWidth : scrollView.frame.size.width
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textView.textContainer?.containerSize = NSSize(width: width, height: CGFloat.greatestFiniteMagnitude)
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} else {
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// No wrap: allow horizontal expansion and horizontal scrolling
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textView.isHorizontallyResizable = true
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textView.textContainer?.widthTracksTextView = false
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textView.textContainer?.heightTracksTextView = false
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scrollView.hasHorizontalScroller = true
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textView.textContainer?.containerSize = NSSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude)
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}
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// Force layout update so the change takes effect immediately
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if let container = textView.textContainer, let lm = textView.layoutManager {
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lm.invalidateLayout(forCharacterRange: NSRange(location: 0, length: (textView.string as NSString).length), actualCharacterRange: nil)
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lm.ensureLayout(for: container)
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}
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scrollView.reflectScrolledClipView(scrollView.contentView)
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}
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func makeNSView(context: Context) -> NSScrollView {
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// Build scroll view and text view
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let scrollView = NSScrollView()
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scrollView.drawsBackground = false
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scrollView.autohidesScrollers = true
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scrollView.hasVerticalScroller = true
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scrollView.contentView.postsBoundsChangedNotifications = true
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let textView = AcceptingTextView(frame: .zero)
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// Configure editing behavior and visuals
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textView.isEditable = true
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textView.isRichText = false
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textView.usesFindBar = true
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textView.isVerticallyResizable = true
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textView.isHorizontallyResizable = false
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textView.font = NSFont.monospacedSystemFont(ofSize: fontSize, weight: .regular)
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if translucentBackgroundEnabled {
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textView.backgroundColor = .clear
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textView.drawsBackground = false
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} else {
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textView.backgroundColor = .textBackgroundColor
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textView.drawsBackground = true
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}
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textView.textContainerInset = NSSize(width: 12, height: 12)
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textView.minSize = NSSize(width: 0, height: 0)
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textView.maxSize = NSSize(width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude)
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textView.isSelectable = true
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textView.allowsUndo = true
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textView.textColor = .labelColor
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textView.insertionPointColor = .controlAccentColor
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// Disable smart substitutions/detections that can interfere with selection when recoloring
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textView.isAutomaticTextCompletionEnabled = false
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textView.isAutomaticQuoteSubstitutionEnabled = false
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textView.isAutomaticDashSubstitutionEnabled = false
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textView.isAutomaticDataDetectionEnabled = false
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textView.isAutomaticLinkDetectionEnabled = false
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textView.isGrammarCheckingEnabled = false
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textView.isContinuousSpellCheckingEnabled = false
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textView.smartInsertDeleteEnabled = false
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textView.registerForDraggedTypes([.fileURL, .URL])
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// Embed the text view in the scroll view
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scrollView.documentView = textView
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// Configure the text view delegate
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textView.delegate = context.coordinator
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// Install line number ruler
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scrollView.hasVerticalRuler = true
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scrollView.rulersVisible = true
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scrollView.verticalRulerView = LineNumberRulerView(textView: textView)
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// Apply wrapping and seed initial content
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applyWrapMode(isWrapped: isLineWrapEnabled, textView: textView, scrollView: scrollView)
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// Seed initial text
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textView.string = text
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DispatchQueue.main.async { [weak scrollView, weak textView] in
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guard let sv = scrollView, let tv = textView else { return }
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sv.window?.makeFirstResponder(tv)
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}
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context.coordinator.scheduleHighlightIfNeeded(currentText: text)
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// Keep container width in sync when the scroll view resizes
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NotificationCenter.default.addObserver(forName: NSView.boundsDidChangeNotification, object: scrollView.contentView, queue: .main) { [weak textView, weak scrollView] _ in
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guard let tv = textView, let sv = scrollView else { return }
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if tv.textContainer?.widthTracksTextView == true {
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tv.textContainer?.containerSize.width = sv.contentSize.width
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if let container = tv.textContainer {
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tv.layoutManager?.ensureLayout(for: container)
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}
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}
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}
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context.coordinator.textView = textView
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return scrollView
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}
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// Keep NSTextView in sync with SwiftUI state and schedule highlighting when needed.
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func updateNSView(_ nsView: NSScrollView, context: Context) {
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if let textView = nsView.documentView as? NSTextView {
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if textView.string != text {
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textView.string = text
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}
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if textView.font?.pointSize != fontSize {
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textView.font = NSFont.monospacedSystemFont(ofSize: fontSize, weight: .regular)
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}
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// Background color adjustments for translucency
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if translucentBackgroundEnabled {
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nsView.drawsBackground = false
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textView.backgroundColor = .clear
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textView.drawsBackground = false
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} else {
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nsView.drawsBackground = false
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textView.backgroundColor = .textBackgroundColor
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textView.drawsBackground = true
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}
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// Keep the text container width in sync & relayout
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applyWrapMode(isWrapped: isLineWrapEnabled, textView: textView, scrollView: nsView)
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// Force immediate reflow after toggling wrap
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if let container = textView.textContainer, let lm = textView.layoutManager {
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lm.invalidateLayout(forCharacterRange: NSRange(location: 0, length: (textView.string as NSString).length), actualCharacterRange: nil)
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lm.ensureLayout(for: container)
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}
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textView.invalidateIntrinsicContentSize()
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nsView.reflectScrolledClipView(nsView.contentView)
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// Only schedule highlight if needed (e.g., language/color scheme changes or external text updates)
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context.coordinator.parent = self
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context.coordinator.scheduleHighlightIfNeeded()
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}
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}
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func makeCoordinator() -> Coordinator {
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Coordinator(self)
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}
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// Coordinator: NSTextViewDelegate that bridges NSText changes to SwiftUI and manages highlighting.
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class Coordinator: NSObject, NSTextViewDelegate {
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var parent: CustomTextEditor
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weak var textView: NSTextView?
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// Background queue + debouncer for regex-based highlighting
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private let highlightQueue = DispatchQueue(label: "NeonVision.SyntaxHighlight", qos: .userInitiated)
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// Snapshots of last highlighted state to avoid redundant work
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private var pendingHighlight: DispatchWorkItem?
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private var lastHighlightedText: String = ""
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private var lastLanguage: String?
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private var lastColorScheme: ColorScheme?
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init(_ parent: CustomTextEditor) {
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self.parent = parent
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super.init()
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NotificationCenter.default.addObserver(self, selector: #selector(moveToLine(_:)), name: .moveCursorToLine, object: nil)
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}
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deinit {
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NotificationCenter.default.removeObserver(self)
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}
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/// Schedules highlighting if text/language/theme changed. Skips very large documents
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/// and defers when a modal sheet is presented.
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func scheduleHighlightIfNeeded(currentText: String? = nil) {
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guard textView != nil else { return }
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// Query NSApp.modalWindow on the main thread to avoid thread-check warnings
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let isModalPresented: Bool = {
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if Thread.isMainThread {
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return NSApp.modalWindow != nil
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} else {
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var result = false
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DispatchQueue.main.sync { result = (NSApp.modalWindow != nil) }
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return result
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}
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}()
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if isModalPresented {
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pendingHighlight?.cancel()
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let work = DispatchWorkItem { [weak self] in
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self?.scheduleHighlightIfNeeded(currentText: currentText)
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}
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pendingHighlight = work
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highlightQueue.asyncAfter(deadline: .now() + 0.3, execute: work)
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return
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}
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let lang = parent.language
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let scheme = parent.colorScheme
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let text: String = {
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if let currentText = currentText {
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return currentText
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}
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if Thread.isMainThread {
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return textView?.string ?? ""
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}
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var result = ""
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DispatchQueue.main.sync {
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result = textView?.string ?? ""
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}
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return result
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}()
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// Skip expensive highlighting for very large documents
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let nsLen = (text as NSString).length
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if nsLen > 200_000 { // ~200k UTF-16 code units
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self.lastHighlightedText = text
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self.lastLanguage = lang
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self.lastColorScheme = scheme
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return
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}
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if text == lastHighlightedText && lastLanguage == lang && lastColorScheme == scheme {
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return
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}
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rehighlight()
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}
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/// Perform regex-based token coloring off-main, then apply attributes on the main thread.
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func rehighlight() {
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guard let textView = textView else { return }
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// Snapshot current state
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let textSnapshot = textView.string
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let language = parent.language
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let scheme = parent.colorScheme
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let selected = textView.selectedRange()
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let colors = SyntaxColors.fromVibrantLightTheme(colorScheme: scheme)
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let patterns = getSyntaxPatterns(for: language, colors: colors)
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// Cancel any in-flight work
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pendingHighlight?.cancel()
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let work = DispatchWorkItem { [weak self] in
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// Compute matches off the main thread
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let nsText = textSnapshot as NSString
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let fullRange = NSRange(location: 0, length: nsText.length)
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var coloredRanges: [(NSRange, Color)] = []
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for (pattern, color) in patterns {
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guard let regex = try? NSRegularExpression(pattern: pattern, options: [.anchorsMatchLines]) else { continue }
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let matches = regex.matches(in: textSnapshot, range: fullRange)
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for match in matches {
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coloredRanges.append((match.range, color))
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}
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}
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DispatchQueue.main.async { [weak self] in
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guard let self = self, let tv = self.textView else { return }
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// Discard if text changed since we started
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guard tv.string == textSnapshot else { return }
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tv.textStorage?.beginEditing()
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// Clear previous coloring and apply base color
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tv.textStorage?.removeAttribute(.foregroundColor, range: fullRange)
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tv.textStorage?.addAttribute(.foregroundColor, value: tv.textColor ?? NSColor.labelColor, range: fullRange)
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// Apply colored ranges
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for (range, color) in coloredRanges {
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tv.textStorage?.addAttribute(.foregroundColor, value: NSColor(color), range: range)
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}
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tv.textStorage?.endEditing()
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// Restore selection only if it hasn't changed since we started
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if NSEqualRanges(tv.selectedRange(), selected) {
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tv.setSelectedRange(selected)
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}
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// Update last highlighted state
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self.lastHighlightedText = textSnapshot
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self.lastLanguage = language
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self.lastColorScheme = scheme
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}
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}
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pendingHighlight = work
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// Debounce slightly to avoid thrashing while typing
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highlightQueue.asyncAfter(deadline: .now() + 0.12, execute: work)
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}
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func textDidChange(_ notification: Notification) {
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guard let textView = notification.object as? NSTextView else { return }
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// Update SwiftUI binding, caret status, and rehighlight.
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parent.text = textView.string
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updateCaretStatusAndHighlight()
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scheduleHighlightIfNeeded(currentText: parent.text)
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}
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func textViewDidChangeSelection(_ notification: Notification) {
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updateCaretStatusAndHighlight()
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}
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// Compute (line, column), broadcast, and highlight the current line.
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private func updateCaretStatusAndHighlight() {
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guard let tv = textView else { return }
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let ns = tv.string as NSString
|
|
let sel = tv.selectedRange()
|
|
let location = sel.location
|
|
let prefix = ns.substring(to: min(location, ns.length))
|
|
let line = prefix.reduce(1) { $1 == "\n" ? $0 + 1 : $0 }
|
|
let col: Int = {
|
|
if let lastNL = prefix.lastIndex(of: "\n") {
|
|
return prefix.distance(from: lastNL, to: prefix.endIndex) - 1
|
|
} else {
|
|
return prefix.count
|
|
}
|
|
}()
|
|
NotificationCenter.default.post(name: .caretPositionDidChange, object: nil, userInfo: ["line": line, "column": col])
|
|
|
|
// Highlight current line
|
|
let lineRange = ns.lineRange(for: NSRange(location: location, length: 0))
|
|
let fullRange = NSRange(location: 0, length: ns.length)
|
|
tv.textStorage?.beginEditing()
|
|
tv.textStorage?.removeAttribute(.backgroundColor, range: fullRange)
|
|
tv.textStorage?.addAttribute(.backgroundColor, value: NSColor.selectedTextBackgroundColor.withAlphaComponent(0.12), range: lineRange)
|
|
tv.textStorage?.endEditing()
|
|
}
|
|
|
|
/// Move caret to a 1-based line number, clamping to bounds, and emphasize the line.
|
|
@objc func moveToLine(_ notification: Notification) {
|
|
guard let lineOneBased = notification.object as? Int,
|
|
let textView = textView else { return }
|
|
|
|
// If there's no text, nothing to do
|
|
let currentText = textView.string
|
|
guard !currentText.isEmpty else { return }
|
|
|
|
// Cancel any in-flight highlight to prevent it from restoring an old selection
|
|
pendingHighlight?.cancel()
|
|
|
|
// Work with NSString/UTF-16 indices to match NSTextView expectations
|
|
let ns = currentText as NSString
|
|
let totalLength = ns.length
|
|
|
|
// Clamp target line to available line count (1-based input)
|
|
let linesArray = currentText.components(separatedBy: .newlines)
|
|
let clampedLineIndex = max(1, min(lineOneBased, linesArray.count)) - 1 // 0-based index
|
|
|
|
// Compute the UTF-16 location by summing UTF-16 lengths of preceding lines + newline characters
|
|
var location = 0
|
|
if clampedLineIndex > 0 {
|
|
for i in 0..<(clampedLineIndex) {
|
|
let lineNSString = linesArray[i] as NSString
|
|
location += lineNSString.length
|
|
// Add one for the newline that separates lines, as components(separatedBy:) drops separators
|
|
location += 1
|
|
}
|
|
}
|
|
// Safety clamp
|
|
location = max(0, min(location, totalLength))
|
|
|
|
// Move caret and scroll into view on the main thread
|
|
DispatchQueue.main.async { [weak self] in
|
|
guard let self = self, let tv = self.textView else { return }
|
|
tv.window?.makeFirstResponder(tv)
|
|
// Ensure layout is up-to-date before scrolling
|
|
if let textContainer = tv.textContainer {
|
|
tv.layoutManager?.ensureLayout(for: textContainer)
|
|
}
|
|
tv.setSelectedRange(NSRange(location: location, length: 0))
|
|
tv.scrollRangeToVisible(NSRange(location: location, length: 0))
|
|
|
|
// Stronger highlight for the entire target line
|
|
let lineRange = ns.lineRange(for: NSRange(location: location, length: 0))
|
|
let fullRange = NSRange(location: 0, length: totalLength)
|
|
tv.textStorage?.beginEditing()
|
|
tv.textStorage?.removeAttribute(.backgroundColor, range: fullRange)
|
|
tv.textStorage?.addAttribute(.backgroundColor, value: NSColor.selectedTextBackgroundColor.withAlphaComponent(0.18), range: lineRange)
|
|
tv.textStorage?.endEditing()
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
import UIKit
|
|
|
|
final class LineNumberedTextViewContainer: UIView {
|
|
let lineNumberView = UITextView()
|
|
let textView = UITextView()
|
|
|
|
override init(frame: CGRect) {
|
|
super.init(frame: frame)
|
|
|
|
lineNumberView.translatesAutoresizingMaskIntoConstraints = false
|
|
textView.translatesAutoresizingMaskIntoConstraints = false
|
|
|
|
lineNumberView.isEditable = false
|
|
lineNumberView.isSelectable = false
|
|
lineNumberView.isScrollEnabled = true
|
|
lineNumberView.isUserInteractionEnabled = false
|
|
lineNumberView.backgroundColor = UIColor.secondarySystemBackground.withAlphaComponent(0.65)
|
|
lineNumberView.textColor = .secondaryLabel
|
|
lineNumberView.textAlignment = .right
|
|
lineNumberView.textContainerInset = UIEdgeInsets(top: 8, left: 4, bottom: 8, right: 6)
|
|
lineNumberView.textContainer.lineFragmentPadding = 0
|
|
|
|
textView.textContainerInset = UIEdgeInsets(top: 8, left: 8, bottom: 8, right: 8)
|
|
|
|
let divider = UIView()
|
|
divider.translatesAutoresizingMaskIntoConstraints = false
|
|
divider.backgroundColor = UIColor.separator.withAlphaComponent(0.6)
|
|
|
|
addSubview(lineNumberView)
|
|
addSubview(divider)
|
|
addSubview(textView)
|
|
|
|
NSLayoutConstraint.activate([
|
|
lineNumberView.leadingAnchor.constraint(equalTo: leadingAnchor),
|
|
lineNumberView.topAnchor.constraint(equalTo: topAnchor),
|
|
lineNumberView.bottomAnchor.constraint(equalTo: bottomAnchor),
|
|
lineNumberView.widthAnchor.constraint(equalToConstant: 46),
|
|
|
|
divider.leadingAnchor.constraint(equalTo: lineNumberView.trailingAnchor),
|
|
divider.topAnchor.constraint(equalTo: topAnchor),
|
|
divider.bottomAnchor.constraint(equalTo: bottomAnchor),
|
|
divider.widthAnchor.constraint(equalToConstant: 1),
|
|
|
|
textView.leadingAnchor.constraint(equalTo: divider.trailingAnchor),
|
|
textView.trailingAnchor.constraint(equalTo: trailingAnchor),
|
|
textView.topAnchor.constraint(equalTo: topAnchor),
|
|
textView.bottomAnchor.constraint(equalTo: bottomAnchor)
|
|
])
|
|
}
|
|
|
|
required init?(coder: NSCoder) {
|
|
fatalError("init(coder:) has not been implemented")
|
|
}
|
|
|
|
func updateLineNumbers(for text: String, fontSize: CGFloat) {
|
|
let lineCount = max(1, text.components(separatedBy: .newlines).count)
|
|
let numbers = (1...lineCount).map(String.init).joined(separator: "\n")
|
|
lineNumberView.font = UIFont.monospacedDigitSystemFont(ofSize: max(11, fontSize - 1), weight: .regular)
|
|
lineNumberView.text = numbers
|
|
}
|
|
}
|
|
|
|
struct CustomTextEditor: UIViewRepresentable {
|
|
@Binding var text: String
|
|
let language: String
|
|
let colorScheme: ColorScheme
|
|
let fontSize: CGFloat
|
|
@Binding var isLineWrapEnabled: Bool
|
|
let translucentBackgroundEnabled: Bool
|
|
|
|
func makeUIView(context: Context) -> LineNumberedTextViewContainer {
|
|
let container = LineNumberedTextViewContainer()
|
|
let textView = container.textView
|
|
|
|
textView.delegate = context.coordinator
|
|
textView.font = UIFont.monospacedSystemFont(ofSize: fontSize, weight: .regular)
|
|
textView.text = text
|
|
textView.autocorrectionType = .no
|
|
textView.autocapitalizationType = .none
|
|
textView.smartDashesType = .no
|
|
textView.smartQuotesType = .no
|
|
textView.smartInsertDeleteType = .no
|
|
textView.backgroundColor = translucentBackgroundEnabled ? .clear : .systemBackground
|
|
textView.textContainer.lineBreakMode = isLineWrapEnabled ? .byWordWrapping : .byClipping
|
|
textView.textContainer.widthTracksTextView = isLineWrapEnabled
|
|
|
|
container.updateLineNumbers(for: text, fontSize: fontSize)
|
|
context.coordinator.container = container
|
|
context.coordinator.textView = textView
|
|
context.coordinator.scheduleHighlightIfNeeded(currentText: text)
|
|
return container
|
|
}
|
|
|
|
func updateUIView(_ uiView: LineNumberedTextViewContainer, context: Context) {
|
|
let textView = uiView.textView
|
|
context.coordinator.parent = self
|
|
if textView.text != text {
|
|
textView.text = text
|
|
}
|
|
if textView.font?.pointSize != fontSize {
|
|
textView.font = UIFont.monospacedSystemFont(ofSize: fontSize, weight: .regular)
|
|
}
|
|
textView.backgroundColor = translucentBackgroundEnabled ? .clear : .systemBackground
|
|
textView.textContainer.lineBreakMode = isLineWrapEnabled ? .byWordWrapping : .byClipping
|
|
textView.textContainer.widthTracksTextView = isLineWrapEnabled
|
|
uiView.updateLineNumbers(for: text, fontSize: fontSize)
|
|
context.coordinator.syncLineNumberScroll()
|
|
context.coordinator.scheduleHighlightIfNeeded(currentText: text)
|
|
}
|
|
|
|
func makeCoordinator() -> Coordinator {
|
|
Coordinator(self)
|
|
}
|
|
|
|
class Coordinator: NSObject, UITextViewDelegate {
|
|
var parent: CustomTextEditor
|
|
weak var container: LineNumberedTextViewContainer?
|
|
weak var textView: UITextView?
|
|
private let highlightQueue = DispatchQueue(label: "NeonVision.iOS.SyntaxHighlight", qos: .userInitiated)
|
|
private var pendingHighlight: DispatchWorkItem?
|
|
private var lastHighlightedText: String = ""
|
|
private var lastLanguage: String?
|
|
private var lastColorScheme: ColorScheme?
|
|
private var isApplyingHighlight = false
|
|
|
|
init(_ parent: CustomTextEditor) {
|
|
self.parent = parent
|
|
}
|
|
|
|
func scheduleHighlightIfNeeded(currentText: String? = nil) {
|
|
guard let textView else { return }
|
|
let text = currentText ?? textView.text ?? ""
|
|
let lang = parent.language
|
|
let scheme = parent.colorScheme
|
|
|
|
if text == lastHighlightedText && lang == lastLanguage && scheme == lastColorScheme {
|
|
return
|
|
}
|
|
|
|
pendingHighlight?.cancel()
|
|
let work = DispatchWorkItem { [weak self] in
|
|
self?.rehighlight(text: text, language: lang, colorScheme: scheme)
|
|
}
|
|
pendingHighlight = work
|
|
highlightQueue.asyncAfter(deadline: .now() + 0.1, execute: work)
|
|
}
|
|
|
|
private func rehighlight(text: String, language: String, colorScheme: ColorScheme) {
|
|
let nsText = text as NSString
|
|
let fullRange = NSRange(location: 0, length: nsText.length)
|
|
let baseColor: UIColor = colorScheme == .dark ? .white : .label
|
|
let baseFont = UIFont.monospacedSystemFont(ofSize: parent.fontSize, weight: .regular)
|
|
|
|
let attributed = NSMutableAttributedString(
|
|
string: text,
|
|
attributes: [
|
|
.foregroundColor: baseColor,
|
|
.font: baseFont
|
|
]
|
|
)
|
|
|
|
let colors = SyntaxColors.fromVibrantLightTheme(colorScheme: colorScheme)
|
|
let patterns = getSyntaxPatterns(for: language, colors: colors)
|
|
|
|
for (pattern, color) in patterns {
|
|
guard let regex = try? NSRegularExpression(pattern: pattern, options: [.anchorsMatchLines]) else { continue }
|
|
let matches = regex.matches(in: text, range: fullRange)
|
|
let uiColor = UIColor(color)
|
|
for match in matches {
|
|
attributed.addAttribute(.foregroundColor, value: uiColor, range: match.range)
|
|
}
|
|
}
|
|
|
|
DispatchQueue.main.async { [weak self] in
|
|
guard let self, let textView = self.textView else { return }
|
|
guard textView.text == text else { return }
|
|
let selectedRange = textView.selectedRange
|
|
self.isApplyingHighlight = true
|
|
textView.attributedText = attributed
|
|
textView.selectedRange = selectedRange
|
|
textView.typingAttributes = [
|
|
.foregroundColor: baseColor,
|
|
.font: baseFont
|
|
]
|
|
self.isApplyingHighlight = false
|
|
self.lastHighlightedText = text
|
|
self.lastLanguage = language
|
|
self.lastColorScheme = colorScheme
|
|
self.container?.updateLineNumbers(for: text, fontSize: self.parent.fontSize)
|
|
self.syncLineNumberScroll()
|
|
}
|
|
}
|
|
|
|
func textViewDidChange(_ textView: UITextView) {
|
|
guard !isApplyingHighlight else { return }
|
|
parent.text = textView.text
|
|
container?.updateLineNumbers(for: textView.text, fontSize: parent.fontSize)
|
|
scheduleHighlightIfNeeded(currentText: textView.text)
|
|
}
|
|
|
|
func scrollViewDidScroll(_ scrollView: UIScrollView) {
|
|
syncLineNumberScroll()
|
|
}
|
|
|
|
func syncLineNumberScroll() {
|
|
guard let textView, let lineView = container?.lineNumberView else { return }
|
|
lineView.contentOffset = CGPoint(x: 0, y: textView.contentOffset.y)
|
|
}
|
|
}
|
|
}
|
|
#endif
|